Home / 1,688.95-2,331.57-1,160.62

Finding the Fourth Proportional to 1,688.95, 2,331.57 and 1,160.62

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Solution

The fourth proportional to 1,688.95, 2,331.57 and 1,160.62 is: 1,602.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,688.95 : 2,331.57 = 1,160.62 : x
  2. Step 2: Convert to fraction form
    1,688.95/2,331.57 = 1,160.62/x
  3. Step 3: Cross multiply
    1,688.95x = 2,331.57 × 1,160.62
  4. Step 4: Simplify right side
    1,688.95x = 2,706,066.77
  5. Step 5: Solve for x
    x = 2,706,066.77/1,688.95
  6. Step 6: Final answer
    x = 1,602.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.